Cannot Print Click Post Labels | Checking Display, Scaling, and Reprints

You completed payment, but the shipping label won't print. Encountering roadblocks in the middle of fulfillment—whether clicking "Print" leads to an error screen, the PDF opens but nothing prints, or the label prints so small that it's unreadable—can bring your shipping operations to a grinding halt.

You can pinpoint the root cause of any label printing problem by isolating it across three distinct stages: whether the PDF opens, whether it prints correctly on paper, and whether the printed label is usable. If the PDF won't open, the issue lies in your browser. If it opens but prints too small, it's a print settings issue. If it prints but can't be used, it's a matter of label expiration or reprinting rules. Let's walk through these checks step by step.

Step 1: Pinpoint Where the Process Is Stopping

Even though all these issues fall under "cannot print," the root cause is located at a completely different layer depending on the stage. For instance, tweaking printer settings won't help if the PDF hasn't even opened yet. Use the table above to identify which stage your symptoms match before troubleshooting.

When the PDF Won't Open or Shows an Error Screen

When a PDF fails to open, the issue almost always stems from browser display settings or extensions. The official Click Post website frequently posts notices regarding printing errors caused by browser environments.

One specific issue highlighted in official announcements occurs in Google Chrome: when attempting to print an address label, the browser displays a "Page Not Found" error. This occurs in certain environments, and Japan Post notes that disabling the "Adobe Acrobat" browser extension often resolves it.

If you are stuck at this stage, try the following steps in order:

1. Temporarily disable PDF-related browser extensions. If you use Chrome, open your settings, go to "Extensions," disable any Adobe Acrobat extensions, and click the "Print" button again. This is the exact fix recommended in official Click Post announcements.
2. Check your popup blocker. The label printing screen opens in a separate popup window; if popups are blocked, clicking print will appear to do nothing. Official announcements explicitly advise users to allow popups and accept cookies for the Click Post site.
3. Ensure Cookies and JavaScript are enabled. Official troubleshooting notices cite cases where disabling either prevents the website from functioning properly.
4. Try a different web browser. If the PDF still refuses to open, try logging in through an alternative browser as suggested in official guidelines. Using a clean browser with no installed extensions is an excellent way to isolate the issue.
5. Open the downloaded PDF in a standalone reader app. Instead of viewing the file within your browser's built-in PDF viewer, download the PDF to your computer and open it with a dedicated application like Adobe Acrobat Reader. This separates browser rendering glitches from the file itself.

One caveat to keep in mind: official Click Post documentation notes that commercial "form auto-fill tools" or input assistance software can cause system malfunctions. If you have browser extensions running that auto-fill addresses or form fields, they might interfere with screen rendering or page transitions. Try temporarily disabling them while troubleshooting.

When Labels Print Too Small, Misaligned, or Cut Off

If the PDF opens without issues but the physical printout comes out small, misaligned, or cropped, the culprit is almost always in your print dialog settings.

First, keep in mind that labels produced via bulk printing are designed to be compact. Click Post's bulk printing feature ("matome-inji") formats 4 labels per single A4 sheet and can output up to 20 shipments at once. This means each individual label is intended to be one-fourth of an A4 page—roughly A6 in size—engineered to be cut out and attached to packages. If it merely "looks smaller than expected," the label output itself is completely normal.

However, if the labels print even smaller than that or are partially cut off, verify the following settings in your print dialog:

1. Set scale to "Actual Size" or "100%". If settings such as "Fit to page" or "Shrink oversized pages" are selected, the PDF page will scale up or down to fit the printable area, throwing off the label's precise dimensions.
2. Set the paper size to A4. If the paper size in your print dialog is set to US Letter or another format, margins will shift, leading to clipped edges or distorted proportions.
3. Verify in the print preview that barcodes and addresses sit inside the borders. Checking the print preview beforehand to ensure no edges are cropped saves you from wasting paper.
4. Print just one test sheet first. Before printing multiple shipments in bulk, print a single sheet first to confirm that everything prints legibly.

While specific menu names and dialog layouts vary by printer model and operating system, mastering these three fundamentals—scaling, paper size, and preview—will resolve the vast majority of printing issues. Hardware malfunctions, such as paper feed failures or depleted ink cartridges, fall outside the scope of this guide.

Checking Whether the Printed Label Is Usable

Once your label is on paper, inspect it to ensure the barcode and text are clearly legible before dropping the parcel into a post box. Japan Post processes shipments by scanning this barcode; if the scanner cannot read it, the post office cannot accept your package.

• Check that the barcode is intact. Make sure it isn't cut off at the edge of the paper and that no lines are broken due to faint ink or streaks.
• Ensure the tracking number digits are legible. If the barcode ever fails to scan mechanically, legible printed digits give postal staff a fallback method to verify the parcel at the counter.
• Check that the recipient's name and address fit neatly inside the frame. If scaling errors caused text to spill outside the designated borders, reprint the label.
• Ensure the barcode won't be obstructed once applied. Affix the label so it doesn't wrap around packaging corners or get obscured by reflective packing tape over the barcode.

Here is some reassuring news: Click Post charges are only finalized when Japan Post scans the barcode during acceptance. Unused labels or those ruined by print failures never incur shipping fees as long as they are never accepted by the post office. If a print job fails, you can simply recycle the paper and reprint without worrying about duplicate shipping charges.

"Reprinting" and "Re-applying" Are Two Different Actions

When you need to output a label again, merchants often confuse "reprinting" (re-issuing a label with the same tracking number) with "re-applying" (creating a brand-new application with a fresh number). Understanding this distinction in advance will save you unnecessary trouble:

• Labels remain valid until the shipping expiration date printed on the label. Within this period, you can reprint the label with the identical tracking number. If printer trouble prevents you from printing on day one, you can simply reprint the label on subsequent days as long as it hasn't expired.
• Expired labels are permanently invalid. Expired labels will not be accepted by Japan Post; if dropped into a mailbox, they will be returned to sender. An expired tracking number cannot be reactivated under any circumstances. You must create a new application using the package details to generate a new tracking number and label.
• Unused labels are never billed. As covered in the previous section, postage is never finalized without acceptance processing by Japan Post. There is no need to file refund requests for expired labels or shipments you cancelled.
• Duplicating labels for different packages is strictly prohibited. You cannot photocopy a label to use on a second package. Each tracking number corresponds to a single parcel. Copying labels breaks tracking management and triggers acceptance rejections at the post office. Every package requires its own separate application and dedicated tracking number.

There is also an important timing consideration: official notices announce that Click Post will undergo system maintenance from Wednesday, September 30, 2026 at 23:30 until Thursday, October 1 at 6:00, during which the entire Click Post website will be inaccessible. In addition, postage rates will increase from 185 yen (tax included) to 240 yen (tax included) starting October 1. Applications with payment completed by September 30 at 23:30 will be honored at the old rate. If you hold labels nearing expiration around this window, be sure to account for this scheduled downtime.

Once Printed, Sync Tracking Numbers Back to Shopify

Once your labels are successfully printed, attach them to your packages and drop them into a post box. The remaining task for your store is registering the issued tracking numbers back into Shopify order management and sending shipping confirmation emails to your customers.

The Shopify app "Instant Shipping! for Click Post" simplifies this entire step: just upload the original label PDF saved during printing, and the app automatically extracts the tracking numbers, registers them to their corresponding Shopify orders, and sends out fulfillment notification emails. (This app is developed and provided by JizaiDev, the team behind this site.)

Please note: this article focuses strictly on troubleshooting the "physical label printing" stage. If your PDF prints fine but you encounter issues during app import—such as "unreadable PDF" or "order not found" errors—the root cause is completely different. In that case, please refer to our troubleshooting checklist for importing PDFs into the app. For details on bulk applications, see our bulk application guide, and to learn how tracking sync works under the hood, check out how to automatically register tracking numbers.

Frequently Asked Questions

Q. Why are my labels printing so small?

PDFs generated via bulk printing ("matome-inji") are designed with 4 labels per A4 sheet, meaning each label is naturally one-fourth the size of an A4 page. This is the intended specification since they are meant to be cut out and pasted onto packages. If your labels print even smaller than that, check your printer dialog settings to ensure the scale isn't set to "Fit to page" or "Shrink to fit", and select "Actual Size" or "100%" instead.

Q. How long do I have to reprint a label?

Labels can be reprinted until the shipping validity date displayed on the label itself. Within this window, you can reprint the label with the same tracking number. Once expired, the label becomes invalid and cannot be revived with the same number; you must submit a new application with the package details to issue a fresh tracking number.

Q. Am I charged for labels that fail to print?

Click Post charges are finalized only when Japan Post processes and accepts the parcel (by scanning the barcode). You will not be charged for misprinted or unused labels as long as they are never accepted by the post office, so you can simply discard the paper if a print fails.

Q. Can I copy the same label and use it on another package?

No, you cannot. Each tracking number corresponds to a single parcel, and duplicating labels across multiple packages is not supported. You must submit a separate application and issue a new label with a distinct tracking number for each package.

Q. Can I issue labels if I don't have a printer at home?

Yes. Because Click Post labels are generated as PDF files, you can save them to a USB flash drive or mobile device and print them using multi-function copy machines at convenience stores. Since shipments are deposited into post boxes or brought to post office counters, only the printing step needs to be done elsewhere (note: shipments on or after October 1, 2026 must generally be dropped in post boxes, with counter drop-offs limited to exceptional circumstances).

Q. Can I print labels using only a smartphone?

You can operate the Click Post web interface through a mobile browser. The standard approach for printing is sending the PDF from your phone to a convenience store copy machine via a mobile printing app. However, if you need to adjust granular printer driver settings such as print scaling, using a PC is much more reliable.

Summary

By isolating printing troubles across three stages—display, printing, and label validity—you can quickly pinpoint where the issue lies. The compact size of bulk-printed labels is standard design, scaling mismatches come down to print dialog zoom settings, and expired labels require a fresh application rather than a reprint. Keeping these three points in mind will keep fulfillment day running smoothly without panic.

Rates and terms verified as of September 18, 2026, based on information from the official Click Post website and the ClickPost app listing. The app is priced at $8 USD/month with a 10-day free trial; recurring charges apply for ongoing use.

Review the step-by-step workflow from label generation to tracking sync in our user guide

Related articles: Click Post Shipping Guide (End-to-End Workflow Map), Troubleshooting PDF imports into the app, Bulk application guide, How to automatically register tracking numbers